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Subject: 
Re: SSClagorpion - Compressor
Newsgroups: 
lugnet.technic
Date: 
Mon, 17 May 2004 21:35:37 GMT
Viewed: 
17971 times
  
In lugnet.technic, Kevin L. Clague wrote:
  Were you able to come up with anything in your compressor experiments?

  The topic of compressors is an interesting one.  As you know there are many
many solutions to this problem.

First of all, no.  I have nothing interesting in the world of compressors.  I
got sidetracked building an all mechanical walker that has no gravity well.  I
think it's a cool idea, which I may revisit later, but I think this design
requires more accurate tuning than is possible with LEGO.  I'll try to get some
pictures posted.

Also, my RC Buggy motors are currently in a robot that needs to be drawn up in
ldraw before I can take it apart.

Anyway...

I have a couple basic questions.

Ignoring time, can both pumps (small & medium) reach the same max pressure?  I
don't think the maximum pressure is really relevant, but the important thing is
trying to get the system to a specific pressure in the minimum time.


How does the "time-to-maximum pressure" relate to the "volume pumped"?  I would
think they are directly related.  In order to get a system to it's maximum
pressure, you must add a specific volume of air.  Right?


So, to create a reasonable test, you could set-up a system using several air
tanks, a piston, and a couple rubber bands, like Ralph had for his switch (I
can't find the link)

Then, let all the air out of the system, and see how long it takes each one to
get enough pressure to expand the piston.

I'll have to try that

Steve



Message has 1 Reply:
  Re: SSClagorpion - Compressor
 
(...) You should go study Dr. C. S. Soh's website for a great foundation on compressors. (...) I've not studied that. I think that the max pressure that LEGO can handle is constrained by hoses staying on fittings, not what the pumps can deliver. (...) (20 years ago, 17-May-04, to lugnet.technic)

Message is in Reply To:
  Re: SSClagorpion - Compressor
 
(...) Hi Steve, Were you able to come up with anything in your compressor experiments? The topic of compressors is an interesting one. As you know there are many many solutions to this problem. The most popular is Ralph Hempel's design that you can (...) (20 years ago, 17-May-04, to lugnet.technic)

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